Waterway - NEO Hi-Limit Overheat Sensor for Waterway NEO Heaters - 770-0101

Waterway – NEO Hi-Limit Overheat Sensor for Waterway NEO Heaters

The Waterway NEO Hi-Limit sensor, part number 770-0101, is a replacement overheat probe for the heater in Waterway NEO hot tub and spa control systems. It is listed for the heater used with the Waterway NEO 2100 control system, including the Waterway NEO 2100 3 kW heater. It is an overheat (Hi-Limit) sensor, so it is a different part from the Waterway NEO temperature sensor.

Compatibility with Waterway NEO systems

This Hi-Limit sensor is a spare part for the heater of Waterway NEO control systems. That includes the 3 kW heater fitted to the NEO 2100.

• Brand: Waterway
• Part number: 770-0101
• Used with: the heater of Waterway NEO spa control systems
• Includes: the 3 kW heater used on the NEO 2100

If your spa uses a different Waterway system or another brand of control system, check the part number before ordering.

Hi-Limit sensor or temperature sensor?

Waterway NEO systems use more than one kind of probe, and the names can be confusing when you search for a replacement. This page is for the overheat probe, also called the Hi-Limit sensor. The temperature sensor is listed as a separate part.

Before you order, check which sensor your heater needs, and look at the part number on the sensor you are replacing.

How to choose the right part

The simplest way to get the right replacement is to compare part numbers. Look for 770-0101 on your current Hi-Limit sensor or in the documentation that came with your heater or control system.

If you cannot find a number, or the number you see is different, contact us with the part number on the back of your current part or the model of your control system. We can then help you confirm whether this overheat sensor is the correct one for your spa.

Part number and search terms

The Waterway part number for this item is 770-0101. You may also find it described as a Waterway NEO overheat probe, a Hi-Limit probe or a hot tub heater spare part. All of these terms refer to the same replacement sensor listed on this page.

When you replace a heater sensor, keep the old part until you have checked that the new one has the same number. This makes it easy to compare the two and avoids ordering the wrong item for your spa.